Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Long Life Charge Scorotron Grid Configuration

IP.com Disclosure Number: IPCOM000131160D
Publication Date: 2005-Nov-08
Document File: 1 page(s) / 31K

Publishing Venue

The IP.com Prior Art Database

Abstract

Charging devices in electrophotographic processors have typically short lives due to grid contamination by toner or other contaminants. Various cleaning strategies have been developed in an attempt to extend scorotron life and maintain performance by actively removing the contaminants. In most cases, the cleaners have proved only marginally successful in reducing the effects of contamination on the function of the charging device. The key failure tends to reside in the ability to clean the grid structure of the scorotron, especially on the surface adjacent to the photoreceptor. Contamination tends to build on the grid structure, causing charge non-uniformity and arcing. This invention proposes the use of multiple grid structures stored in a simple configuration that can be replaced at appropriate intervals. The strategy would include a storage / dispense mechanism and additional hardware that would allow cleaning of the material as an option.

This text was extracted from a Microsoft Word document.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 74% of the total text.

Long Life Charge Scorotron Grid Configuration

Charging devices in electrophotographic processors have typically short lives due to grid contamination by toner or other contaminants.  Various cleaning strategies have been developed in an attempt to extend scorotron life and maintain performance by actively removing the contaminants.  In most cases, the cleaners have proved only marginally successful in reducing the effects of contamination on the function of the charging device.  The key failure tends to reside in the ability to clean the grid structure of the scorotron, especially on the surface adjacent to the photoreceptor.  Contamination tends to build on the grid structure, causing charge non-uniformity and arcing.

This invention proposes the use of multiple grid structures stored in a simple configuration that can be replaced at appropriate intervals.  The strategy would include a storage / dispense mechanism and additional hardware that would allow cleaning of the material as an option.

In the figure below, three distinct scorotron grid structures are seen in the assembly.  When needed, the grid can be indexed to the next new structure by rotating a mechanism on the storage/dispense module.  Other configurations can be envisioned for this proposal, including a “window shade” arrangement that would include a supply and take-up roller for a continuous supply of grid material.  The grid material could also be indexed as part of the typical print/copy operation...